{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:57.399146", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-Jul-30_to_2013-Aug-02_14.5_-4.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013070001501}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 02 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 64760.749197385405}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Congo", "Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -4.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -3.47], [13.32, -3.32], [13.47, -2.97], [14.0, -2.75], [14.25, -2.85], [14.5, -2.75], [14.75, -2.85], [15.0, -2.75], [15.25, -2.85], [15.5, -2.75], [16.03, -2.97], [16.18, -3.32], [16.53, -3.47], [16.75, -4.0], [16.53, -4.53], [16.0, -4.75], [15.75, -4.65], [15.68, -4.68], [15.53, -5.03], [15.0, -5.25], [14.75, -5.15], [14.68, -5.18], [14.53, -5.53], [14.0, -5.75], [13.47, -5.53], [13.32, -5.18], [12.97, -5.03], [12.75, -4.5], [12.85, -4.25], [12.75, -4.0], [12.97, -3.47]]]]}, "2013-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -3.47], [13.32, -3.32], [13.47, -2.97], [13.82, -2.82], [13.97, -2.47], [14.5, -2.25], [15.03, -2.47], [15.18, -2.82], [15.25, -2.85], [15.32, -2.82], [15.47, -2.47], [16.0, -2.25], [16.25, -2.35], [16.5, -2.25], [17.03, -2.47], [17.25, -3.0], [17.15, -3.25], [17.25, -3.5], [17.03, -4.03], [16.68, -4.18], [16.65, -4.25], [16.75, -4.5], [16.53, -5.03], [16.0, -5.25], [15.5, -5.04], [15.0, -5.25], [14.75, -5.15], [14.68, -5.18], [14.53, -5.53], [14.0, -5.75], [13.47, -5.53], [13.32, -5.18], [12.97, -5.03], [12.75, -4.5], [12.85, -4.25], [12.75, -4.0], [12.97, -3.47]]]]}, "2013-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -3.47], [13.32, -3.32], [13.47, -2.97], [13.82, -2.82], [13.97, -2.47], [14.5, -2.25], [15.03, -2.47], [15.18, -2.82], [15.25, -2.85], [15.32, -2.82], [15.47, -2.47], [16.0, -2.25], [16.25, -2.35], [16.5, -2.25], [17.03, -2.47], [17.25, -3.0], [17.15, -3.25], [17.25, -3.5], [17.03, -4.03], [16.68, -4.18], [16.65, -4.25], [16.75, -4.5], [16.53, -5.03], [16.0, -5.25], [15.5, -5.04], [15.0, -5.25], [14.75, -5.15], [14.68, -5.18], [14.53, -5.53], [14.0, -5.75], [13.47, -5.53], [13.32, -5.18], [12.97, -5.03], [12.75, -4.5], [12.85, -4.25], [12.75, -4.0], [12.97, -3.47]]]]}, "2013-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.35, -4.25], [13.25, -4.0], [13.35, -3.75], [13.25, -3.5], [13.47, -2.97], [13.82, -2.82], [13.97, -2.47], [14.5, -2.25], [15.03, -2.47], [15.18, -2.82], [15.25, -2.85], [15.32, -2.82], [15.47, -2.47], [16.0, -2.25], [16.25, -2.35], [16.5, -2.25], [17.03, -2.47], [17.25, -3.0], [17.15, -3.25], [17.25, -3.5], [17.03, -4.03], [16.68, -4.18], [16.65, -4.25], [16.75, -4.5], [16.53, -5.03], [16.0, -5.25], [15.5, -5.04], [15.0, -5.25], [14.75, -5.15], [14.68, -5.18], [14.53, -5.53], [14.0, -5.75], [13.47, -5.53], [13.25, -5.0], [13.35, -4.75], [13.25, -4.5], [13.35, -4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.838908444313688}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3508634519737626}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.085447054481676, 21.75451736412481, 21.615547623276086, 21.52428920938098]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.179808890437243, 20.501084390115693, 20.503217911223658, 20.408090774484663]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4031026143557408, -1.1898360070877954, -1.3264415784363315, -1.5145923072980616]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.838908444313688, -1.4188721759798, -1.6481169355924976, -1.8016478090555097]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.691815342943124, -1.4733217609780014, -1.6865186270086054, -1.8706173173296208]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.211645266138119, -1.7823803975515624, -2.1325271777143384, -2.2380952815509296]}}